P1: Milestones second funding period

• Hadronic cross section via ISR at BESIII:
  Finalize and publish analysis of the processes e⁺e^- → π⁺π^-π⁰π⁰; new results for ISR channel e⁺e^- → π⁺π^- at low and high energies; results for the forward-backward asymmetry
• Inclusive R ratio via energy scan:
  First results with accuracy of 4 to 5 %
• Charmonium spectroscopy:
  Finalize and publish analysis of the channel e⁺e^- → J/ψ π⁺π^-; carry out χ_c1 scan and publish result
• Development of GEM-based focal plane detectors:
  Technical design report for MAGIX spectrometer setup
• Lattice QCD:
  Complete the second-generation calculation of a_μ^HVP with a target precision of 2 %, including quark-disconnected diagrams. Determine the running of α_em and sin²(θ_w). Establish a calculational scheme for determining the hadronic light-by-light scattering contribution.